It originally aired on the Fox network in the United States on May 20, 2007 as part of the one-hour season finale, alongside the episode "You Kent Always Say What You Want".

The episode is a spoof of the Fox television drama 24, and sees Principal Skinner's new Counter Truancy Unit (CTU), led by Lisa Simpson, attempting to prevent a stink bomb being released at Springfield Elementary School.

Guest stars include Kiefer Sutherland and Mary Lynn Rajskub as their respective characters from 24, Jack Bauer and Chloe O'Brian.

To tackle misbehavior, Principal Skinner opens a CTU – Counter Truancy Unit – at Springfield Elementary School with Lisa heading up the operation over Milhouse, Martin and Database.

In order to save time, she drastically increases the oven temperature to 1,200 degrees, quickly burning the cake and making it rock-solid.

Lisa suggests that Bart help them, though he only agrees after negotiating immunity from punishment for all his past and future pranks (and making Skinner teach him a new swear word).

At Jimbo's house, the bullies make a powerful stink bomb (which resembles the canisters of Sentox Nerve Gas from season 5 of 24) from the expired yogurt and a variety of other putrid items, and plan on detonating it at the bake sale.

Bart, still tied up, manages to contact Lisa by his cell phone, telling her to have Skinner dump the hot dog water to short circuit the ventilation fan.

He wrote: "One reason why The Simpsons has remained so watchable is that its parodies are getting sharper – The Departed in Debarted, The Da Vinci Code in Gone Maggie Gone.